Bi-annual	US dollars
1987-06-30	426
1987-12-31	259
1988-06-30	426
1988-12-31	212
1989-06-30	307
1989-12-31	164
1990-06-30	338
1990-12-31	19
1991-06-30	60
1991-12-31	45
1992-06-30	17
1992-12-31	11
1993-06-30	44
1993-12-31	130
1994-06-30	764
1994-12-31	83
1995-06-30	222
1995-12-31	382
1996-06-30	312
1996-12-31	233
1997-06-30	306
1997-12-31	202
1998-06-30	250
1998-12-31	173
1999-06-30	296